The Houston Texans boast the NFL's best sack differential in 2012, while the Jacksonville Jaguars own the worst.

The NFL is a big man's game. It's very tough to win in this league without getting good play up front.

Prior to the last few years, the key to winning in the NFL was two-fold: run the ball successfully on offense and find a way to stop the run on defense. Well, that is no longer the appropriate formula in today's pass-happy league.

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The New York Giants won Super Bowl XLVI in February with the NFL's 32nd-ranked rushing attack and 19th-ranked run defense. As the NFL has evolved into a passing league, the importance of line play hasn't exactly decreased, but the focus has been slightly altered. Protecting the quarterback is the No. 1 priority for the offensive line, while getting after the quarterback is the key to being a successful defensive front.

I first heard the term "sack differential" about five years ago. I'm sure the term had been used in NFL circles long before that, but it has really become a common phrase in recent years. Sack differential is the stat that NFL coaches and personnel types often cite when evaluating how their "bigs" are performing.

It's a very simple formula: Sacks produced by your defense minus sacks allowed by your offense. Obviously, the goal is to post as high a positive number as possible. For example, last season, the Giants produced 48 sacks (tied for third in the NFL) on defense and allowed 28 sacks (seventh-best in the NFL) on offense. Their final sack differential was +20.

It wasn't a coincidence that the Giants won the Super Bowl with a significant positive sack differential. As you can see by the following chart, the last 10 Super Bowl winners have all posted positive sack differentials during their championship seasons.

We are only five weeks into the 2012 campaign, but I thought it would be worthwhile to get an early gauge on where everyone stands in this important statistic. Here are all 32 teams, ranked from best sack differential to worst.